WO2020073433A1 - 液晶显示面板的驱动装置以及驱动方法 - Google Patents

液晶显示面板的驱动装置以及驱动方法 Download PDF

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Publication number
WO2020073433A1
WO2020073433A1 PCT/CN2018/116359 CN2018116359W WO2020073433A1 WO 2020073433 A1 WO2020073433 A1 WO 2020073433A1 CN 2018116359 W CN2018116359 W CN 2018116359W WO 2020073433 A1 WO2020073433 A1 WO 2020073433A1
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Prior art keywords
overdrive
pixel unit
display area
lookup table
voltage
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PCT/CN2018/116359
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English (en)
French (fr)
Inventor
李浩林
肖光星
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • the present application relates to the field of liquid crystal display, and in particular to a driving device and a driving method of a liquid crystal display panel.
  • LCD Liquid Crystal display
  • other flat display devices are widely used in mobile phones, TVs, personal digital assistants, digital cameras, notebook computers, desktop computers due to their advantages of high image quality, power saving, thin body and wide range of applications.
  • Various consumer electronic products have become the mainstream in display devices.
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module (backlight module) module).
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates, and control the liquid crystal molecules to change direction by energizing or not, and refract the light of the backlight module to generate a picture.
  • the frame provides the driving voltage of the gray level Gn 'corresponding to the voltage difference greater than the voltage of the gray level Gn-1, thereby speeding up the liquid crystal turnover speed, and reaching the gray level Gn actually required in the nth frame to solve the smear problem.
  • the prior art usually sets an OD look-up table (Look-Up-Table, LUT) in the LCD driving device, and the abscissa of the LUT is the previous gray level.
  • the ordinate is the gray level of the current frame (Current).
  • the data obtained by searching the gray level of the previous frame and the gray level of the current frame is the gray level actually output during overdrive.
  • the gray level of the previous frame is 32
  • the gray level of the current frame is 32.
  • the level is 128.
  • the driving chip IC is often only provided at one end of the display panel, which causes these pixel units and the driving chip IC The resistance of the signal lines between them is different.
  • the driving chip IC outputs the same driving voltage, the actual driving voltage to each pixel unit is not the same, which leads to the problem of uneven conversion speed of the pixel unit in the same video screen area.
  • the existing liquid crystal display panel driving technology has a technical problem that all pixel units use the same OD lookup table, resulting in uneven conversion speed of the pixel units in the same video screen area.
  • the present application provides a driving device and a driving method for a liquid crystal display panel to solve the technology that all the pixel units in the existing liquid crystal display panel driving technology use the same OD lookup table to cause the uneven conversion speed of the pixel unit in the same video screen area problem.
  • An embodiment of the present application provides a driving method of a liquid crystal display panel.
  • the liquid crystal display panel includes at least one display area, and the display area includes at least one pixel unit.
  • the driving method includes the following steps:
  • the step of obtaining the overdrive lookup table of the pixel unit includes:
  • the overdrive lookup table corresponding to the home display area is used as the overdrive lookup table of the pixel unit.
  • the step of obtaining the overdrive lookup table corresponding to the home display area includes:
  • the corresponding overdrive lookup table is found from the mapping relationship between the preset display area identifier and the overdrive lookup table.
  • the method before the step of acquiring the overdrive lookup table of the pixel unit, the method further includes:
  • an overdrive lookup table of the display area is generated.
  • the step of acquiring the overdrive voltage of the display area includes:
  • the overdrive voltage of the display area is generated according to the overdrive voltage of the sample pixel unit.
  • the step of generating the overdrive voltage of the display area according to the overdrive voltage of the sample pixel unit includes:
  • the overdrive voltage of the sample pixel unit is used as the overdrive voltage of the display area.
  • the step of generating the overdrive voltage of the display area according to the overdrive voltage of the sample pixel units includes:
  • the step of driving the pixel unit to work according to the overdrive lookup table of the pixel unit includes:
  • the corresponding overdrive voltage value is found in the overdrive lookup table
  • a first driving voltage V1 is input to the pixel electrode of the pixel unit, and a first common voltage Vcom1 is input to the common electrode of the pixel unit, and the first driving voltage V1 Opposite to the phase of the first common voltage Vcom1;
  • the method before the step of acquiring the overdrive lookup table of the pixel unit, the method further includes:
  • the overdrive lookup table of the pixel unit is obtained according to the refresh frequency, and the overdrive lookup table corresponding to different refresh frequencies is different.
  • the step of determining the refresh frequency of the video source signal according to the video source signal includes:
  • the current refresh frequency of the liquid crystal display panel is calculated according to the frequency of the pixel clock signal and a preset refresh frequency calculation formula.
  • An embodiment of the present application provides a driving device for a liquid crystal display panel.
  • the liquid crystal display panel includes at least one display area, and the display area includes at least one pixel unit.
  • the driving device includes an acquisition unit and a driving unit connected to each other. among them:
  • the obtaining unit is used to obtain an overdrive lookup table of the pixel unit; the overdrive lookup table of the pixel unit belonging to different display areas is different;
  • the driving unit is used to drive the pixel unit to work according to the over-drive lookup table of the pixel unit.
  • the acquiring unit is specifically configured to: acquire a home display area of the pixel unit; acquire an overdrive lookup table corresponding to the home display area; search overdrive corresponding to the home display area A table as an overdrive lookup table for the pixel unit.
  • the obtaining unit is specifically configured to: according to the display area identifier of the home display area, find the corresponding overdrive lookup from the mapping relationship between the preset display area identifier and the overdrive lookup table table.
  • the driving device further includes a dividing unit, a testing unit and a processing unit, wherein:
  • the dividing unit is used to divide the liquid crystal display panel into at least one display area
  • the test unit is used to obtain an overdrive voltage of the display area
  • the processing unit is configured to generate an overdrive lookup table of the display area according to the overdrive voltage of the display area.
  • the test unit is specifically used to: select a sample pixel unit among the pixel units in the display area; obtain an overdrive voltage of the sample pixel unit; The driving voltage generates an overdriving voltage of the display area.
  • the number of the sample pixel unit is one, and the test unit is specifically configured to: use the overdrive voltage of the sample pixel unit as the overdrive voltage of the display area.
  • the number of the sample pixel units is greater than one, and the test unit is specifically configured to: perform weighted calculation on the overdrive voltage of each sample pixel unit to obtain the overdrive voltage of the display area.
  • the acquiring unit is specifically configured to: receive a video source signal and determine a refresh frequency of the video source signal according to the video source signal; acquire an overdrive search of the pixel unit according to the refresh frequency Table, the overdrive lookup table corresponding to different refresh frequency is different.
  • the acquisition unit is specifically configured to: decompress the pixel clock signal from the video source signal and detect the frequency of the pixel clock signal; according to the frequency of the pixel clock signal and The preset refresh frequency calculation formula calculates the current refresh frequency of the liquid crystal display panel.
  • the present application provides a new driving method and driving device for a liquid crystal display panel, which divides the liquid crystal display panel into at least one display area, the display area includes at least one pixel unit, and the method includes acquiring the Overdrive lookup table, the overdrive lookup table of the pixel unit belonging to different display areas is different, the pixel unit is driven to work according to the overdrive lookup table of the pixel unit; in this way, when driving the liquid crystal display panel, different The pixel units provide different overdriving voltages, which can ensure that these pixel units can change the brightness on time, realize the uniform conversion speed of the pixel units in the same video screen area, and solve the existing liquid crystal display panel driving technology. All pixel units use the same The OD lookup table leads to the technical problem that the conversion speed of pixel units in the same video picture area is not uniform.
  • FIG. 1 is a first schematic diagram of a driving method provided by this application.
  • FIG. 2 is a second schematic diagram of the driving method provided by the present application.
  • FIG. 3 is a schematic diagram of a display area division of a liquid crystal display panel provided by this application.
  • FIG. 4 is a schematic diagram of an overdrive lookup table provided by this application.
  • FIG. 5 is a schematic diagram of a driving device provided by this application.
  • the liquid crystal display panel includes at least one display area, and the display area includes at least one pixel unit.
  • the panel is horizontally divided into M areas, M is greater than or equal to 1, and the size of the M partition may not Equal, set the partition by setting the horizontal coordinate point, and vertically partition the panel into the N area, N is greater than or equal to 1, and the size of the N partition can be unequal, set the partition by setting the vertical coordinate point.
  • the driving method provided by the embodiment of the present application includes the following steps:
  • the step of driving the pixel unit to work according to the overdrive lookup table of the pixel unit includes the following:
  • a first driving voltage V1 is input to the pixel electrode of the pixel unit, and a first common voltage Vcom1 is input to the common electrode of the pixel unit, and the first driving voltage V1 Opposite to the phase of the first common voltage Vcom1;
  • the absolute value of the voltage difference between the first driving voltage V1 and the first common voltage Vcom1 is switched from the first brightness screen to the second brightness screen and completed within a frame response time T
  • the required overdrive voltage value that is, the pixel unit is switched from the first brightness image to the second brightness image and the required drive voltage value is completed within a frame response time T. Since it is larger than the driving voltage value required for the normal display of the second luminance picture of the pixel unit, it is called an over-driving voltage value.
  • the absolute value of the voltage difference between the second driving voltage V2 and the second common voltage Vcom2 is the driving voltage value required when the second luminance picture is displayed normally.
  • the first driving voltage V1 input to the pixel electrode of the pixel unit in the first frame of the second brightness screen is a positive value
  • the first common voltage is a negative value
  • the first driving voltage V1 input to the pixel electrode of the pixel unit in the first frame of the second brightness screen is a negative value
  • the first common voltage is a positive value
  • the overdrive look-up table is shown in FIG. 4, the horizontal coordinate of the LUT is the previous gray level, and the vertical coordinate is the current gray level.
  • the data obtained from the grayscale search of the current frame is the grayscale actually output during overdrive.
  • the grayscale of the previous frame is 32
  • the grayscale of the current frame is 128.
  • the grayscale actually output during overdrive is 152.
  • the step of obtaining the overdrive lookup table of the pixel unit includes:
  • the overdrive lookup table corresponding to the home display area is used as the overdrive lookup table of the pixel unit.
  • the step of obtaining the overdrive lookup table corresponding to the home display area includes:
  • the corresponding overdrive lookup table is found from the mapping relationship between the preset display area identifier and the overdrive lookup table.
  • the driving method provided by the embodiment of the present application includes the following steps:
  • the step of acquiring the overdrive voltage of the display area includes:
  • the overdrive voltage of the display area is generated according to the overdrive voltage of the sample pixel unit.
  • the number of the sample pixel unit is one, and the step of generating the overdrive voltage of the display area according to the overdrive voltage of the sample pixel unit includes:
  • the overdrive voltage of the sample pixel unit is used as the overdrive voltage of the display area.
  • the number of the sample pixel unit is greater than one, and the step of generating the overdrive voltage of the display area according to the overdrive voltage of the sample pixel unit includes:
  • the overdrive voltage of each sample pixel unit is calculated by weighted summation or averaging, etc. to obtain the overdrive voltage of the display area.
  • the display area identifier of the display area is used to uniquely determine the display area, which can be represented by the coordinates of the display area, such as (0, 0), (x1, 0), etc.
  • the step of acquiring the overdriving voltage of the sample pixel unit includes: measuring the brightness difference corresponding to the intersection of the abscissa and the ordinate in the lookup table shown in FIG. 4 and completing within a frame time
  • the minimum voltage required to change the brightness For example, for a video with a frequency of 40 Hz, a frame time is 0.025 seconds, the brightness changes from gray level 32 to gray level 128, the minimum required driving voltage is gray level 152, and the corresponding overdrive unit is gray level 152.
  • the method provided by the embodiments of the present application includes the following steps:
  • Step 1 Receive a video source signal and determine the refresh frequency of the video source signal according to the video source signal;
  • Step 2 Obtain the overdrive lookup table of the pixel unit according to the refresh frequency, the overdrive lookup table corresponding to different refresh frequencies is different; the overdrive lookup table of the pixel unit belonging to different display areas is different;
  • Step 3 Drive the liquid crystal display panel to work according to the obtained overdrive lookup table.
  • step 1 the process of determining the refresh frequency of the video source signal according to the video source signal specifically includes:
  • the preset refresh frequency calculation formula is:
  • Refresh is the refresh frequency of the liquid crystal display panel
  • PCLKRefresh is the frequency of the pixel clock signal
  • Vtotal is the total data scanned in the preset horizontal direction
  • Htotal is the line data scanned in the preset vertical direction.
  • the process of detecting the frequency of the pixel clock signal specifically includes:
  • the frequency of the pixel clock signal is equal to 1 / (2T), and T is the high-level duration of the pixel clock signal;
  • the high level of the pixel clock signal may be sampled multiple times by the sampling clock signal, and accordingly Obtain a plurality of frequencies of the pixel clock signal, and then calculate an average value of the plurality of frequencies of the pixel clock signal, and use the average value of the plurality of frequencies as the frequency of the pixel clock signal for calculating the refresh frequency.
  • the driving device of the liquid crystal display panel provided by the embodiment of the present application includes an acquisition unit 54 and a driving unit 55 connected to each other, wherein:
  • the obtaining unit 54 is used to obtain an overdrive lookup table of the pixel unit; the overdrive lookup table of the pixel unit belonging to different display areas is different;
  • the driving unit 55 is configured to drive the pixel unit to work according to an over-drive lookup table of the pixel unit.
  • the acquiring unit 54 is specifically configured to: acquire the attribution display area of the pixel unit; acquire the overdrive lookup table corresponding to the attribution display area; search the overdrive lookup corresponding to the attribution display area A table as an overdrive lookup table for the pixel unit.
  • the obtaining unit 54 is specifically configured to: according to the display area identifier of the home display area, find the corresponding overdrive lookup from the mapping relationship between the preset display area identifier and the overdrive lookup table table.
  • the driving device of the liquid crystal display panel includes a dividing unit 51, a testing unit 52, a processing unit 53, an acquiring unit 54 and a driving unit 55, which are:
  • the dividing unit 51 is used to divide the liquid crystal display panel into at least one display area
  • the test unit 52 is used to obtain the overdrive voltage of the display area
  • the processing unit 53 is configured to generate an overdrive lookup table of the display area according to the overdrive voltage of the display area;
  • the obtaining unit 54 is used to obtain an overdrive lookup table of the pixel unit; the overdrive lookup table of the pixel unit belonging to different display areas is different;
  • the driving unit 55 is configured to drive the pixel unit to work according to an over-drive lookup table of the pixel unit.
  • test unit 52 is specifically used to: select a sample pixel unit among the pixel units in the display area; obtain an overdrive voltage of the sample pixel unit; The driving voltage generates an overdriving voltage of the display area.
  • the number of the sample pixel unit is one, and the test unit 52 is specifically configured to: use the overdrive voltage of the sample pixel unit as the overdrive voltage of the display area.
  • the number of the sample pixel units is greater than one, and the test unit 52 is specifically configured to: perform weighted calculation on the overdrive voltage of each sample pixel unit to obtain the overdrive voltage of the display area.
  • the acquiring unit 54 is specifically configured to: receive a video source signal and determine the refresh frequency of the video source signal according to the video source signal; acquire an overdrive search of the pixel unit according to the refresh frequency Table, the overdrive lookup table corresponding to different refresh frequency is different.
  • the obtaining unit 54 is specifically configured to: decompress the pixel clock signal from the video source signal and detect the frequency of the pixel clock signal; according to the frequency of the pixel clock signal and The preset refresh frequency calculation formula calculates the current refresh frequency of the liquid crystal display panel.
  • the present application provides a new driving method and driving device for a liquid crystal display panel, which divides the liquid crystal display panel into at least one display area, the display area includes at least one pixel unit, and the method includes acquiring the Overdrive lookup table, the overdrive lookup table of the pixel unit belonging to different display areas is different, the pixel unit is driven to work according to the overdrive lookup table of the pixel unit; in this way, when driving the liquid crystal display panel, different The pixel units provide different overdriving voltages, which can ensure that these pixel units can change the brightness on time, realize the uniform conversion speed of the pixel units in the same video screen area, and solve the existing liquid crystal display panel driving technology. All pixel units use the same The OD lookup table leads to the technical problem that the conversion speed of pixel units in the same video picture area is not uniform.

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Abstract

一种液晶显示面板的驱动方法以及驱动装置，其将液晶显示面板划分为至少一个显示区，归属于不同显示区的像素单元的过驱动查找表不同，这样在进行液晶显示面板的驱动时，针对不同的像素单元提供不同的过驱动电压，可以保证这些像素单元可以准时进行亮度变化，实现了同一视频画面区域内像素单元变换速度均匀。

Description

液晶显示面板的驱动装置以及驱动方法 技术领域
本申请涉及液晶显示领域，尤其涉及一种液晶显示面板的驱动装置以及驱动方法。
 背景技术
随着显示技术的发展，液晶显示器(Liquid Crystal Display，LCD)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
现有市场上的液晶显示装置大部分为背光型液晶显示器，其包括液晶显示面板及背光模组(backlight module)。液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。
在液晶显示面板驱动过程中，由于液晶的反应速度有限，难以在一帧的时间内达到预期的偏转角度，会使得显示亮度达不到预期，动态画面表现出拖尾，为克服上述缺陷，现有技术提出了一种过驱动技术(over driver，OD)，以使液晶在较短的时间内达到预期偏转目标，OD技术的原理是:设n为正整数，从n-1帧切换到n帧时，若需要从灰阶Gn-1变为灰阶Gn，若是只给对应灰阶Gn的驱动电压，由于液晶翻转的反应速度慢，实际在第n帧并不能达不到我们需要的灰阶Gn，而使用OD技术，在第n帧提供对应与灰阶Gn-1的电压的电压差更大的灰阶Gn'的驱动电压，从而加快液晶翻转速度，在第n帧达到实际所需的灰阶Gn，解决拖影问题。
进一步地，为了实现OD技术，现有技术通常是会在液晶显示器驱动装置中设置一OD查找表(Look-Up-Table，LUT)，该LUT的横坐标为前一帧(Previous)灰阶，纵坐标为当前帧(Current)灰阶，通过前一帧灰阶和当前帧灰阶查找得到的数据即为过驱动时实际输出的灰阶，例如，前一帧灰阶为32，当前帧灰阶为128，通过查表，过驱动时实际是输出的灰阶为152。
但是，随着显示面板的尺寸以及分辨率的增大，显示面板内的像素单元也越来越多，而驱动芯片IC往往仅设置在显示面板的一端，这就导致这些像素单元与驱动芯片IC之间的信号线的电阻不同，在驱动芯片IC输出相同的驱动电压时，到达各像素单元的实际驱动电压并不相同，这就导致同一视频画面区域内像素单元变换速度不均匀的问题。
即，现有液晶显示面板驱动技术存在所有像素单元都使用同一个OD查找表导致同一视频画面区域内像素单元变换速度不均匀的技术问题。
 技术问题
本申请提供一种液晶显示面板的驱动装置以及驱动方法，以解决现有液晶显示面板驱动技术存在的所有像素单元都使用同一个OD查找表导致同一视频画面区域内像素单元变换速度不均匀的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种液晶显示面板的驱动方法，所述液晶显示面板包括至少一个显示区，所述显示区包括至少一个像素单元，所述驱动方法包括如下步骤：
获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
根据所述像素单元的过驱动查找表驱动所述像素单元工作。
在本申请的驱动方法中，所述获取所述像素单元的过驱动查找表的步骤包括：
获取所述像素单元的归属显示区；
获取所述归属显示区对应的过驱动查找表；
将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
在本申请的驱动方法中，所述获取所述归属显示区对应的过驱动查找表的步骤包括：
根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
在本申请的驱动方法中，在获取所述像素单元的过驱动查找表的步骤之前，还包括：
将所述液晶显示面板划分为至少一个显示区；
获取所述显示区的过驱动电压；
根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表。
在本申请的驱动方法中，所述获取所述显示区的过驱动电压的步骤包括：
在所述显示区的像素单元中，选择样本像素单元；
获取所述样本像素单元的过驱动电压；
根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
在本申请的驱动方法中，所述样本像素单元的数量为一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
在本申请的驱动方法中，所述样本像素单元的数量大于一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
对各样本像素单元的过驱动电压进行加权计算，得到所述显示区的过驱动电压。
在本申请的驱动方法中，所述根据所述像素单元的过驱动查找表驱动所述像素单元工作的步骤包括：
当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在所述过驱动查找表中查找得到对应的过驱动电压值；
在所述第二亮度画面的第一帧向所述像素单元的像素电极输入第一驱动电压V1，并向所述像素单元的公共电极输入第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；
在所述第二亮度画面的第二帧向所述像素单元的像素电极输入第二驱动电压V2，向所述像素单元的公共电极输入第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
在本申请的驱动方法中，在获取所述像素单元的过驱动查找表的步骤之前，还包括：
接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；
根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同。
在本申请的驱动方法中，所述根据所述视频源信号确定所述视频源信号的刷新频率的步骤包括：
从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；
根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率。
本申请实施例提供了一种液晶显示面板的驱动装置，所述液晶显示面板包括至少一个显示区，所述显示区包括至少一个像素单元，所述驱动装置包括相互连接的获取单元以及驱动单元，其中：
所述获取单元用于获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
所述驱动单元用于根据所述像素单元的过驱动查找表驱动所述像素单元工作。
在本申请的驱动装置中，所述获取单元具体用于：获取所述像素单元的归属显示区；获取所述归属显示区对应的过驱动查找表；将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
在本申请的驱动装置中，所述获取单元具体用于：根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
在本申请的驱动装置中，所述驱动装置还包括划分单元、测试单元以及处理单元，其中：
所述划分单元用于将所述液晶显示面板划分为至少一个显示区；
所述测试单元用于获取所述显示区的过驱动电压；
所述处理单元用于根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表。
在本申请的驱动装置中，所述测试单元具体用于：在所述显示区的像素单元中，选择样本像素单元；获取所述样本像素单元的过驱动电压；根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
在本申请的驱动装置中，所述样本像素单元的数量为一个，所述测试单元具体用于：将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
在本申请的驱动装置中，所述样本像素单元的数量大于一个，所述测试单元具体用于：对各样本像素单元的过驱动电压进行加权计算，得到所述显示区的过驱动电压。
在本申请的驱动装置中，所述驱动单元具体用于：当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在所述过驱动查找表中查找得到对应的过驱动电压值；在所述第二亮度画面的第一帧向所述像素单元的像素电极输入一第一驱动电压V1，并向所述像素单元的公共电极输入一第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；在所述第二亮度画面的第二帧向所述像素单元的像素电极输入一第二驱动电压V2，向所述像素单元的公共电极输入一第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
在本申请的驱动装置中，所述获取单元具体用于：接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同。
在本申请的驱动装置中，所述获取单元具体用于：从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率。
 有益效果
本申请提供一种新的液晶显示面板的驱动方法以及驱动装置，其将所述液晶显示面板划分为至少一个显示区，所述显示区包括至少一个像素单元，该方法包括获取所述像素单元的过驱动查找表，归属于不同显示区的像素单元的过驱动查找表不同，根据所述像素单元的过驱动查找表驱动所述像素单元工作；这样在进行液晶显示面板的驱动时，针对不同的像素单元提供不同的过驱动电压，可以保证这些像素单元可以准时进行亮度变化，实现了同一视频画面区域内像素单元变换速度均匀，解决了现有液晶显示面板驱动技术存在所有像素单元都使用同一个OD查找表导致同一视频画面区域内像素单元变换速度不均匀的技术问题。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请提供的驱动方法的第一种示意图。
图2为本申请提供的驱动方法的第二种示意图。
图3为本申请提供的液晶显示面板的显示区划分示意图。
图4为本申请提供的过驱动查找表的示意图。
图5为本申请提供的驱动装置的示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
针对现有液晶显示面板驱动技术存在所有像素单元都使用同一个OD查找表导致同一视频画面区域内像素单元变换速度不均匀的技术问题，本申请能够解决该缺陷。
如图3所示，所述液晶显示面板包括至少一个显示区，所述显示区包括至少一个像素单元，具体的，对面板进行水平分成M区，M大于等于1，且M分区的大小可以不相等，通过设置水平坐标点来设置分区，将面板进行垂直分区N区，N大于等于1，且N分区的大小可以不相等，通过设置垂直坐标点来设置分区。
如图1所示，本申请实施例提供的驱动方法包括如下步骤：
S11、获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
S12、根据所述像素单元的过驱动查找表驱动所述像素单元工作。
在一种实施例中，根据所述像素单元的过驱动查找表驱动所述像素单元工作的步骤包括以下：
当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在表4中查找得到对应的过驱动电压值；
在所述第二亮度画面的第一帧向所述像素单元的像素电极输入第一驱动电压V1，并向所述像素单元的公共电极输入第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；
在所述第二亮度画面的第二帧向所述像素单元的像素电极输入第二驱动电压V2，向所述像素单元的公共电极输入第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
其中，所述第一驱动电压V1与所述第一公共电压Vcom1的电压差的绝对值为由所述第一亮度画面切换至所述第二亮度画面且在一帧画面响应时间T内完成所需的过驱动电压值，即所述像素单元由所述第一亮度画面切换至所述第二亮度画面且在一帧画面响应时间T内完成所需的驱动电压值。由于其大于所述像素单元第二亮度画面正常显示时所需要的驱动电压值，故称为过驱动电压值。所述第二驱动电压V2与所述第二公共电压Vcom2的电压差的绝对值为所述第二亮度画面正常显示时所需的驱动电压值。
在一种实施例中，在所述第二亮度画面的第一帧向所述像素单元的像素电极输入的所述第一驱动电压V1为正值，所述第一公共电压为负值，在本申请的另一个实施例中，在所述第二亮度画面的第一帧向所述像素单元的像素电极输入的所述第一驱动电压V1为负值，所述第一公共电压为正值，本申请对此并不做限定，只要保证所述第一驱动电压与所述第一公共电压相位相反即可。
在一种实施例中，过驱动查找表如图4所示，该LUT的横坐标为前一帧(Previous)灰阶，纵坐标为当前帧(Current)灰阶，通过前一帧灰阶和当前帧灰阶查找得到的数据即为过驱动时实际输出的灰阶，例如，前一帧灰阶为32，当前帧灰阶为128，通过查表，过驱动时实际是输出的灰阶为152。
在一种实施例中，所述获取所述像素单元的过驱动查找表的步骤包括：
获取所述像素单元的归属显示区；
获取所述归属显示区对应的过驱动查找表；
将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
在一种实施例中，所述获取所述归属显示区对应的过驱动查找表的步骤包括：
根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
如图2所示，本申请实施例提供的驱动方法包括如下步骤：
S21、将所述液晶显示面板划分为至少一个显示区；
S22、获取所述显示区的过驱动电压；
S23、根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表。
在一种实施例中，所述获取所述显示区的过驱动电压的步骤包括：
在所述显示区的像素单元中，选择样本像素单元；
获取所述样本像素单元的过驱动电压；
根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
在一种实施例中，所述样本像素单元的数量为一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
在一种实施例中所述样本像素单元的数量大于一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
对各样本像素单元的过驱动电压进行加权求和或者求平均值等计算，得到所述显示区的过驱动电压。
具体的，如图3所示，首先将面板进行水平分成M区，M大于等于1，且M分区的大小可以不相等，通过设置水平坐标点来设置分区；然后将面板进行垂直分区N区，N大于等于1，且N分区的大小可以不相等，通过设置垂直坐标点来设置分区；最后量测对应显示区的过驱动数据，将其填入对应的存储区域。例如，当水平的分区设置成5时，可以设置水平的位置X1，X2，X3，X4，当垂直的分区设置成3时，可以设置垂直的位置Y1，Y2，如图3所示，就可以将面板分成15个显示区。
显示区的显示区标识用于唯一确定显示区，可以由显示区的坐标表示，如（0，0），（x1，0）等。
在一种实施例中，获取所述样本像素单元的过驱动电压的步骤包括：按照图4所示的查找表内横坐标与纵坐标的交点对应的亮度差值测量，在一帧时间内完成亮度变化所需要的最小电压。例如，针对频率为40Hz的视频，一帧时间为0.025秒，亮度由灰阶32变为灰阶128，所需要的最小驱动电压为灰阶152，则对应的过驱动单元为灰阶152。
在一种实施例中，本可以还可以针对所有频率格式的视频都进行测试，如40Hz、60Hz和144Hz等，这样针对一个像素单元就存在多个过驱动查找表。那么此时，本申请实施例提供的方法包括以下步骤：
步骤1、接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；
步骤2、根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同；归属于不同显示区的像素单元的过驱动查找表不同；
步骤3、根据所述获取的过驱动查找表驱动液晶显示面板工作。
其中，在步骤1中，根据所述视频源信号确定所述视频源信号的刷新频率过程的具体包括:
从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；
根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率；
其中，预设的刷新频率计算公式为:
Refresh = PCLKRefresh/(Vtotal*Htotal)；
其中，Refresh为液晶显示面板的刷新频率，PCLKRefresh为像素时钟信号的频率，Vtotal为预设的水平方向扫描的总数据，Htotal为预设的垂直方向扫描的行数据。
具体地，侦测所述像素时钟信号的频率的过程具体包括:
产生至少两条依次相移且频率相同的采样时钟信号；
通过所述采样时钟信号采集所述像素时钟信号的高电平，并计数采集到所述像素时钟信号的高电平的采样时钟信号的条数；
根据所述采集到所述像素时钟信号的高电平的采样时钟信号的条数计算像素时钟信号的高电平时长；
根据所述像素时钟信号的高电平时长计算像素时钟信号的频率，所述像素时钟信号的频率等于1/ (2T) ，T为像素时钟信号的高电平时长；
其中，所述采样时钟信号的周期大于所述像素时钟信号的周期的两倍；所述像素时钟信号的高电平时长的计算方法为:T=tl*n，tl为相邻的两条采样时钟信号之间的时间间隔，n为采集到所述像素时钟信号的高电平的采样时钟信号的条数。
在一种实施例中，为了进一步的提升侦测的像素时钟信号PCLK的频率的准确性，还可以通过所述采样时钟信号对所述像素时钟信号的高电平进行多次采样，并据此得到所述像素时钟信号的多个频率，再计算所述像素时钟信号的多个频率的平均值，以所述多个频率的平均值作为用于计算刷新频率的像素时钟信号的频率。
如图5所示，本申请实施例提供的液晶显示面板的驱动装置包括相互连接的获取单元54以及驱动单元55，其中：
所述获取单元54用于获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
所述驱动单元55用于根据所述像素单元的过驱动查找表驱动所述像素单元工作。
在一种实施例中，所述获取单元54具体用于：获取所述像素单元的归属显示区；获取所述归属显示区对应的过驱动查找表；将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
在一种实施例中，所述获取单元54具体用于：根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
如图5所示，本申请实施例提供的液晶显示面板的驱动装置包括相互连接的划分单元51、测试单元52、处理单元53、获取单元54以及驱动单元55，其中：
所述划分单元51用于将所述液晶显示面板划分为至少一个显示区；
所述测试单元52用于获取所述显示区的过驱动电压；
所述处理单元53用于根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表；
所述获取单元54用于获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
所述驱动单元55用于根据所述像素单元的过驱动查找表驱动所述像素单元工作。
在一种实施例中，所述测试单元52具体用于：在所述显示区的像素单元中，选择样本像素单元；获取所述样本像素单元的过驱动电压；根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
在一种实施例中，所述样本像素单元的数量为一个，所述测试单元52具体用于：将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
在一种实施例中，所述样本像素单元的数量大于一个，所述测试单元52具体用于：对各样本像素单元的过驱动电压进行加权计算，得到所述显示区的过驱动电压。
在一种实施例中，所述驱动单元55具体用于：当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在所述过驱动查找表中查找得到对应的过驱动电压值；在所述第二亮度画面的第一帧向所述像素单元的像素电极输入一第一驱动电压V1，并向所述像素单元的公共电极输入一第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；在所述第二亮度画面的第二帧向所述像素单元的像素电极输入一第二驱动电压V2，向所述像素单元的公共电极输入一第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
在一种实施例中，所述获取单元54具体用于：接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同。
在一种实施例中，所述获取单元54具体用于：从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率。
根据上述实施例可知：
本申请提供一种新的液晶显示面板的驱动方法以及驱动装置，其将所述液晶显示面板划分为至少一个显示区，所述显示区包括至少一个像素单元，该方法包括获取所述像素单元的过驱动查找表，归属于不同显示区的像素单元的过驱动查找表不同，根据所述像素单元的过驱动查找表驱动所述像素单元工作；这样在进行液晶显示面板的驱动时，针对不同的像素单元提供不同的过驱动电压，可以保证这些像素单元可以准时进行亮度变化，实现了同一视频画面区域内像素单元变换速度均匀，解决了现有液晶显示面板驱动技术存在所有像素单元都使用同一个OD查找表导致同一视频画面区域内像素单元变换速度不均匀的技术问题。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种液晶显示面板的驱动方法，所述液晶显示面板包括至少一个显示区，所述显示区包括至少一个像素单元，所述驱动方法包括如下步骤：
    获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
    根据所述像素单元的过驱动查找表驱动所述像素单元工作。
  2. 根据权利要求1所述的液晶显示面板的驱动方法，其中，所述获取所述像素单元的过驱动查找表的步骤包括：
    获取所述像素单元的归属显示区；
    获取所述归属显示区对应的过驱动查找表；
    将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
  3. 根据权利要求2所述的液晶显示面板的驱动方法，其中，所述获取所述归属显示区对应的过驱动查找表的步骤包括：
    根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
  4. 根据权利要求1所述的液晶显示面板的驱动方法，其中，在获取所述像素单元的过驱动查找表的步骤之前，还包括：
    将所述液晶显示面板划分为至少一个显示区；
    获取所述显示区的过驱动电压；
    根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表。
  5. 根据权利要求4所述的液晶显示面板的驱动方法，其中，所述获取所述显示区的过驱动电压的步骤包括：
    在所述显示区的像素单元中，选择样本像素单元；
    获取所述样本像素单元的过驱动电压；
    根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
  6. 根据权利要求5所述的液晶显示面板的驱动方法，其中，所述样本像素单元的数量为一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
    将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
  7. 根据权利要求5所述的液晶显示面板的驱动方法，其中，所述样本像素单元的数量大于一个，所述根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压的步骤包括：
    对各样本像素单元的过驱动电压进行加权计算，得到所述显示区的过驱动电压。
  8. 根据权利要求1所述的液晶显示面板的驱动方法，其中，所述根据所述像素单元的过驱动查找表驱动所述像素单元工作的步骤包括：
    当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在所述过驱动查找表中查找得到对应的过驱动电压值；
    在所述第二亮度画面的第一帧向所述像素单元的像素电极输入第一驱动电压V1，并向所述像素单元的公共电极输入第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；
    在所述第二亮度画面的第二帧向所述像素单元的像素电极输入第二驱动电压V2，向所述像素单元的公共电极输入第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
  9. 根据权利要求1所述的液晶显示面板的驱动方法，其中，在获取所述像素单元的过驱动查找表的步骤之前，还包括：
    接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；
    根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同。
  10. 根据权利要求9所述的液晶显示面板的驱动方法，其中，所述根据所述视频源信号确定所述视频源信号的刷新频率的步骤包括：
    从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；
    根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率。
  11. 一种液晶显示面板的驱动装置，所述液晶显示面板包括至少一个显示区，所述显示区包括至少一个像素单元，所述驱动装置包括相互连接的获取单元以及驱动单元，其中：
    所述获取单元用于获取所述像素单元的过驱动查找表；归属于不同显示区的像素单元的过驱动查找表不同；
    所述驱动单元用于根据所述像素单元的过驱动查找表驱动所述像素单元工作。
  12. 根据权利要求11所述的液晶显示面板的驱动装置，其中，所述获取单元具体用于：获取所述像素单元的归属显示区；获取所述归属显示区对应的过驱动查找表；将所述归属显示区对应的过驱动查找表，作为所述像素单元的过驱动查找表。
  13. 根据权利要求12所述的液晶显示面板的驱动装置，其中，所述获取单元具体用于：根据所述归属显示区的显示区标识，从预设的显示区标识与过驱动查找表的映射关系中查找到对应的过驱动查找表。
  14. 根据权利要求11所述的液晶显示面板的驱动装置，其中，所述驱动装置还包括划分单元、测试单元以及处理单元，其中：
    所述划分单元用于将所述液晶显示面板划分为至少一个显示区；
    所述测试单元用于获取所述显示区的过驱动电压；
    所述处理单元用于根据所述显示区的过驱动电压，生成所述显示区的过驱动查找表。
  15. 根据权利要求14所述的液晶显示面板的驱动装置，其中，所述测试单元具体用于：在所述显示区的像素单元中，选择样本像素单元；获取所述样本像素单元的过驱动电压；根据所述样本像素单元的过驱动电压，生成所述显示区的过驱动电压。
  16. 根据权利要求15所述的液晶显示面板的驱动装置，其中，所述样本像素单元的数量为一个，所述测试单元具体用于：将所述样本像素单元的过驱动电压，作为所述显示区的过驱动电压。
  17. 根据权利要求15所述的液晶显示面板的驱动装置，其中，所述样本像素单元的数量大于一个，所述测试单元具体用于：对各样本像素单元的过驱动电压进行加权计算，得到所述显示区的过驱动电压。
  18. 根据权利要求11所述的液晶显示面板的驱动装置，其中，所述驱动单元具体用于：当所述像素单元的显示画面由第一亮度画面切换至第二亮度画面时，在所述过驱动查找表中查找得到对应的过驱动电压值；在所述第二亮度画面的第一帧向所述像素单元的像素电极输入一第一驱动电压V1，并向所述像素单元的公共电极输入一第一公共电压Vcom1，且所述第一驱动电压V1与所述第一公共电压Vcom1的相位相反；在所述第二亮度画面的第二帧向所述像素单元的像素电极输入一第二驱动电压V2，向所述像素单元的公共电极输入一第二公共电压Vcom2，其中，V2=-V1- Vcom1，且Vcom2=- Vcom1。
  19. 根据权利要求11所述的液晶显示面板的驱动装置，其中，所述获取单元具体用于：接收视频源信号，并根据所述视频源信号确定所述视频源信号的刷新频率；根据所述刷新频率获取像素单元的过驱动查找表，不同刷新频率对应的过驱动查找表不同。
  20. 根据权利要求19所述的液晶显示面板的驱动装置，其中，所述获取单元具体用于：从所述视频源信号中解压得出像素时钟信号，并侦测所述像素时钟信号的频率；根据所述像素时钟信号的频率以及预设的刷新频率计算公式计算得出当前所述液晶显示面板的刷新频率。
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